Solve the equation y=x2−2x−3.
Let us draw the graph of y=x2–2x−3
Now consider the following table by assigning integer values from –3 to 4 in and finding the corresponding values of y=x2–2x−3
x−3−2−101234x2941014916−2x6420−2−4−6−8−3−3−3−3−3−3−3−3−3y1250−3−4−305